CN110985374A

CN110985374A - Roller, pump body subassembly, compressor

Info

Publication number: CN110985374A
Application number: CN201911214585.6A
Authority: CN
Inventors: 赵庆富; 孙晓梅; 余冰; 柳鹏
Original assignee: Gree Electric Appliances Inc of Zhuhai; Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai; Gree Green Refrigeration Technology Center Co Ltd of Zhuhai; Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-04-10

Abstract

The invention provides a roller, a pump body assembly and a compressor. The roller comprises a roller body, wherein at least one axial end of the roller body is provided with a first annular groove, the roller further comprises an end plate, and a deformation part is arranged between the end plate and the bottom wall of the first groove of the first annular groove. According to the roller, the pump body assembly and the compressor, the end plate is arranged at least one end of the roller, and the elastic deformation piece is arranged between the end plate and the roller body, so that the abrasion degree can be effectively reduced.

Description

Roller, pump body subassembly, compressor

Technical Field

The invention belongs to the technical field of compressor manufacturing, and particularly relates to a roller, a pump body assembly and a compressor.

Background

The rotor compressor roller is one of the core components of the compressor pump body, and in the running process of the compressor, the roller simultaneously generates relative motion friction with the end faces of the upper flange and the lower flange (or the end faces of the flange and the partition plate) and the head of the sliding vane, so that the temperature of the roller is increased, large thermal deformation is generated in the axial direction, further, the axial clearance between the roller and the matching end faces of the two sides (the end faces of the upper flange and the lower flange or the end faces of the flange and the partition plate) is reduced, and finally, the roller and the end faces of. In order to compensate for the above-mentioned deficiencies, it is common practice for compressor manufacturers to enlarge the axial design gap between the rollers and the upper and lower flanges (or diaphragms), but this approach has the disadvantage of low compressor energy efficiency.

Disclosure of Invention

Therefore, an object of the present invention is to provide a roller, a pump assembly, and a compressor, in which at least one end of the roller has an end plate, and an elastic deformation member is provided between the end plate and the roller body, so as to effectively reduce the degree of wear.

In order to solve the above problems, the present invention provides a roller, which includes a roller body, wherein at least one axial end of the roller body is provided with a first ring groove, the roller further includes an end plate, and a deformation portion is provided between the end plate and a first groove bottom wall of the first ring groove.

Preferably, the deformation portion comprises a spring.

Preferably, one side of the end plate, which faces the roller body, is provided with a first mounting column, and/or one side of the bottom wall of the first groove, which faces the end plate, is provided with a second mounting column, and the spring is sleeved on the first mounting column and/or the second mounting column.

Preferably, the height of the first mounting column is H1, the height of the second mounting column is H2, the height of a ring wall corresponding to the first ring groove on the roller body is H4, and H4-H1-H2 is greater than 0.

Preferably, 0.1mm ≦ H4-H1-H2 ≦ 2 mm.

Preferably, the radial thickness of the annular wall is t, and t is more than or equal to 1 mm.

Preferably, the deformation portion comprises a rod configured on a side of the end plate facing the roller body, and the first groove bottom wall has a hole correspondingly matched with the rod.

Preferably, a second ring groove is further formed in the bottom wall of the first groove, and the second ring groove is arranged concentrically with the first ring groove.

Preferably, the thickness of the end plate is H, and H is more than or equal to mm; and/or the side of the end plate, which is far away from the roller body, is provided with a wear-resistant layer.

Preferably, the roller body is provided with a third ring groove on the inner side wall of the ring wall corresponding to the first ring groove, and the third ring groove extends outwards in the radial direction of the roller body.

Preferably, the deformations have at least three groups; and/or the deformation parts are at least provided with three groups, and the three groups of deformation parts are uniformly arranged at intervals along the circumferential direction of the roller body.

The invention also provides a pump body assembly which comprises the roller.

The invention also provides a compressor, which comprises the pump body assembly.

In the roller, the pump body assembly and the compressor provided by the invention, the deformation part is arranged between the end plate and the first groove bottom wall, when the flanges or the partition plates at two ends of the roller body apply force to the end part of the roller body, at this time, on one hand, the thickness of the ring wall corresponding to the end part of the roller body is reduced due to the arrangement of the first ring groove at the end part of the roller body, so that the deformation of the ring wall in the direction of the force is easier (namely, the rigidity of the ring wall is reduced and the flexibility of the ring wall is improved), further, the abrasion degree between the free end surface of the ring wall and the flange or the partition plate contacted with the free end surface can be reduced, on the other hand, the end plate in the first ring groove (which can be understood as being in the ring wall) can be deformed in the direction of the force more easily due to the arrangement of the deformation part between the end plate and the, therefore, certain flexibility is formed, so that the abrasion degree between the free end surface of the annular wall and a flange or a partition plate which is in contact with the free end surface can be reduced, namely the flexibility of the roller in the axial direction is improved, the axial design gap can be designed to be smaller, and the abrasion between the end surface of the roller and a contacted part is effectively reduced; on the other hand, in the prior art, the head of the sliding vane in the roller compressor is abutted against the outer peripheral wall of the roller, and in the actual operation process, the sliding vane is biased in the axial direction of the roller due to unbalanced load, which causes the end part of the sliding vane in the axial direction of the roller to be seriously worn.

Drawings

FIG. 1 is a schematic perspective view of a roller according to an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of FIG. 1;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a schematic view of the internal structure of a roller according to another embodiment of the present invention;

FIG. 5 is an exploded view of FIG. 3;

FIG. 6 is a schematic view of a roller body of a roller according to yet another embodiment of the present invention;

fig. 7 is a schematic structural view of a roller body in a roller according to still another embodiment of the present invention.

The reference numerals are represented as:

1. a roller body; 11. a first ring groove; 12. a first slot bottom wall; 121. a second mounting post; 122. an aperture; 123. a second ring groove; 13. an annular wall; 131. a third ring groove; 2. an end plate; 21. a first mounting post; 3. a deformation section; 31. a spring; 32. a rod.

Detailed Description

Referring to fig. 1 to 7 in combination, according to an embodiment of the present invention, there is provided a roller, including a roller body 1, at least one axial end of the roller body 1 is provided with a first ring groove 11, and an end plate 2, and a deformation portion 3 is provided between the end plate 2 and a first groove bottom wall 12 of the first ring groove 11. In this technical solution, the deformation portion 3 is disposed between the end plate 2 and the first groove bottom wall 12, when the flanges or the partition boards at the two ends of the roller body 1 apply force to the end portion of the roller body 1, at this time, because the thickness of the ring wall 13 corresponding to the end portion of the roller body 1 is reduced due to the disposition of the first ring groove 11 at the end portion, the deformation of the ring wall 13 in the direction of the force is easier (that is, the rigidity of the ring wall 13 is reduced and the flexibility is improved), and further the degree of wear between the free end surface of the ring wall 13 and the flange or the partition board in contact therewith can be reduced, and on the other hand, the end plate 2 in the first ring groove 11 (which can be understood as being in the ring wall 13) can be deformed in the direction of the force more easily due to the disposition of the deformation portion 3 between the end plate and the first groove bottom wall 12, thus, certain flexibility is formed, so that the abrasion degree between the free end surface of the annular wall 13 and a flange or a partition plate in contact with the free end surface can be reduced, namely the flexibility of the roller in the axial direction is improved, the axial design gap can be designed to be smaller, and the abrasion between the end surface of the roller and a contacted part is effectively reduced; on the other hand, in the prior art, the head of the sliding vane in the roller compressor is abutted against the outer peripheral wall of the roller, and in the actual operation process, the sliding vane is biased in the axial direction of the roller due to unbalanced load, which causes the end part of the sliding vane in the axial direction of the roller to be seriously worn. More specifically, as shown in fig. 1 and 4, the first ring grooves 11 are disposed at both axial ends of the roller body 1, the end plates 2 are disposed in the first ring grooves 11, and the deformation portions 3 are disposed between the end plates 2 and the first groove bottom wall 12. Preferably, the deformation portions 3 have at least three groups, three groups of the deformation portions 3 are uniformly spaced along the circumferential direction of the roller body 1 to ensure that the end plate 2 can be stably supported, and three groups of the deformation portions 3 are uniformly spaced along the circumferential direction of the roller body 1, for example, they may also be set to four groups.

As a specific embodiment, it is preferable that the deformation portion 3 includes a spring 31, and a plurality of springs 31 are arranged in an array between the end plate 2 and the first groove bottom wall 12. At this time, a gap exists between the end plate 2 and the first groove bottom wall 12 instead of direct contact, and at this time, local heat generated between the end plate 2 and a component in contact with the end plate can be effectively isolated, so that axial deformation generated by thermal load at the end face of the roller body is effectively reduced, the axial design gap between the roller and the contact component can be further reduced, the leakage amount in the pump body assembly is reduced, and the energy efficiency of the compressor is improved.

Further, in order to ensure the position reliability of the spring, it is preferable that a first mounting column 21 is provided on a side of the end plate 2 facing the roller body 1, and/or a second mounting column 121 is provided on a side of the first groove bottom wall 12 facing the end plate 2, and the spring 31 is sleeved on the first mounting column 21 and/or the second mounting column 121. In order to ensure the floating flexibility of the end plate 2 relative to the roller body 1, the height of the first mounting column 21 is H1, the height of the second mounting column 121 is H2, the height of the annular wall 13 corresponding to the first annular groove 11 on the roller body 1 is H4, and H4-H1-H2 is greater than 0. Furthermore, H4-H1-H2 is not more than 0.1mm and not more than 2 mm.

As another alternative embodiment of the deformation part 3, the deformation part 3 includes a rod 32 configured on the side of the end plate 2 facing the roller body 1, the first groove bottom wall 12 has a hole 122 corresponding to the rod 32, the rod 32 can be integrally formed with the end plate 2, or can be detachably connected with the end plate 2, the design purpose of the rod 32 is to provide a flexible support member, which uses the slender shape of the rod 32 to realize the deformation of flexibility, so as to realize the connection between the end plate 2 and the parts contacting with it, which can be floated, and the beneficial effects achieved by the deformation part 3 includes a spring, which is not described herein, but the principle of reducing wear is consistent with the spring, but the deformation in the technical scheme depends on the deformation of the rod 32, and the spring depends on the expansion and contraction deformation of the spring.

Further, in order to synchronously reduce the possible degree of wear between the eccentric portions of the crankshaft in the roller body 1, preferably, a second ring groove 123 is further configured on the first groove bottom wall 12, the second ring groove 123 is concentrically arranged with the first ring groove 11, and by configuring the second ring groove 123 on the first groove bottom wall 12, the wall thickness of the upper end portion and the lower end portion of the inner hole wall matched with the eccentric portion of the crankshaft can be reduced, so that the flexibility of the upper end portion and the lower end portion is improved, and the corresponding wear reducing effect is achieved.

The thickness of the end plate 2 is H3, H3 is greater than or equal to 1mm, so as to ensure that the end plate 2 has sufficient strength, preferably, a wear-resistant layer is arranged on one side of the end plate 2 away from the roller body 1, so as to improve the wear-resistant performance of the end plate 2, the wear-resistant layer can be formed by, for example, phosphorizing the end portion of the end plate 2, or performing a corresponding plating layer, such as resin-plated wear-resistant material, or the like, or certainly, the whole end plate 2 can be made of wear-resistant material.

Further, the roller body 1 is provided with a third ring groove 131 on the inner side wall of the ring wall 13 corresponding to the first ring groove 11, the third ring groove 131 extends outward in the radial direction of the roller body 1, and this design can further improve the axial and radial deformability of the ring wall 13 while ensuring the sealing width (sealing distance) of the free end surface of the ring wall 13, thereby further reducing the wear degree between friction pairs.

In order to ensure the structural rigidity and the sealing distance of the annular wall 13, the radial thickness of the annular wall 13 is preferably t1, and t1 is more than or equal to 1 mm.

It is worth mentioning that, among this technical scheme, because the design of first annular groove 11, second annular groove 123 and third annular groove 131 can play the effect of storage to lubricating oil to can be favorable to reducing degree of wear between roller body 1 and the bent axle eccentric portion, simultaneously, still reduced the whole quality of roller has realized the lightweight design of roller, and this can reduce the centrifugal load of the eccentric portion department at bent axle operation in-process, has effectively reduced the vibration of compressor, reduces the material cost of roller simultaneously.

There is also provided, in accordance with an embodiment of the present invention, a pump body assembly including the roller described above.

According to an embodiment of the invention, a compressor is also provided, which comprises the pump body assembly.

According to an embodiment of the invention, a refrigerator is also provided, which comprises the compressor. It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. The roller is characterized by comprising a roller body (1), wherein at least one axial end of the roller body (1) is provided with a first annular groove (11), the roller further comprises an end plate (2), and a deformation part (3) is arranged between the end plate (2) and a first groove bottom wall (12) of the first annular groove (11).

2. Roller according to claim 1, characterized in that the deformation (3) comprises a spring (31).

3. A roller according to claim 2, characterized in that the side of the end plate (2) facing the roller body (1) is provided with a first mounting post (21) and/or the side of the first channel bottom wall (12) facing the end plate (2) is provided with a second mounting post (121), the spring (31) being fitted over the first mounting post (21) and/or the second mounting post (121).

4. A roller according to claim 3, characterised in that the first mounting post (21) has a height H1, the second mounting post (121) has a height H2, and the roller body (1) has a ring wall (13) corresponding to the first ring groove (11) having a height H4, H4-H1-H2 > 0.

5. The roller according to claim 4, characterized in that 0.1mm ≦ H4-H1-H2 ≦ 2 mm.

6. A roller according to claim 4, characterized in that the radial thickness of the ring wall (13) is t1, t1 ≧ 1 mm.

7. A roller according to claim 1, characterized in that the deformation (3) comprises a rod (32) configured on the side of the end plate (2) facing the roller body (1), the first channel bottom wall (12) having a hole (122) corresponding to the rod (32).

8. A roller according to claim 7, characterized in that the first groove bottom wall (12) is further configured with a second ring groove (123), the second ring groove (123) being arranged concentrically with the first ring groove (11).

9. A roller according to any one of claims 1 to 8, characterized in that the thickness of the end plate (2) is H3, H3 ≧ 1 mm; and/or the side of the end plate (2) far away from the roller body (1) is provided with a wear-resistant layer.

10. A roller according to any of claims 1 to 8, characterized in that a third ring groove (131) is further provided in the inner side wall of the ring wall (13) of the roller body (1) corresponding to the first ring groove (11), the third ring groove (131) extending radially outwards of the roller body (1).

11. A roller according to any one of claims 1 to 8, characterized in that said deformations (3) have at least three groups; and/or the deformation parts (3) are at least provided with three groups, and the three groups of deformation parts (3) are uniformly arranged at intervals along the circumferential direction of the roller body (1).

12. A pump body assembly comprising a roller, wherein the roller is as claimed in any one of claims 1 to 11.

13. A compressor comprising a pump body assembly, characterized in that it is the pump body assembly of claim 12.